Question

我想将data列溢出到3个新列中

最后
首先
后

数据的值为Spaces OR'，'逗号分隔。

data
ABC, RICK SEAN, MD
MES, AEL B, MD FACC
DAN, RK, MD
OHI, NIK, MD F
KA E SYME, PA-C
ALL MUD, SIM, MD
RINE EEMAN, FNP-C
ABC, PQR DIR

必需输出：

desc                        last        first       post

ABC, RICK SEAN, MD          ABC         RICK SEAN   MD          
MES, AEL B, MD FACC         MES         AEL B       MD FACC
DAN, RK, MD                 DAN         RK          MD
OHI, NIK, MD F              OHI         NIK         MD F
KA E SYME, PA-C             KA          E SYME      PA-C
ALL MUD, SIM, MD            ALL MUD     SIM         MD
RINE EEMAN, FNP-C           RINE        EEMAN       FNP-C
ABC, PQR DIR                ABC         PQR         DIR

检查第一行数据列有2个逗号，最后一行只有一个逗号。

此处创建的示例http://rextester.com/BEHUP42399

select left(data, charindex(',', data) -1)  from TTT

它尝试了'最后'名称列，但为'KA E SYME'提供了错误的o / p，即单个逗号记录。如果数据有单个逗号，并且在逗号之前只有一个单词表示逗号之后有两个单词，那么结果将是。检查最后记录ABVC。

eg. ABC, PQR DIR

Answer 1

您可以使用CROSS APLLY：

进行尝试

    SELECT N.DATA [descr],
       CASE
           WHEN N.last = ''
           THEN LTRIM(N.first)
           ELSE LTRIM(N.last)
       END last,
       CASE
           WHEN N.last = ''
           THEN SUBSTRING(LTRIM(N.post), 1, CHARINDEX(CHAR(32), LTRIM(N.post)))
           ELSE LTRIM(N.first)
       END first,
       CASE
           WHEN N.last = ''
           THEN SUBSTRING(LTRIM(N.post), (CHARINDEX(' ', LTRIM(N.post))+1), LEN(LTRIM(N.post)))
           ELSE LTRIM(N.post)
       END post
FROM
(
    SELECT D.DATA,
           CASE
               WHEN D.post IS NULL
               THEN LEFT(D.last, CHARINDEX(' ', D.last))
               ELSE D.last
           END last,
           CASE
               WHEN d.post IS NULL
               THEN SUBSTRING(D.last, (CHARINDEX(' ', D.last)+1), LEN(D.last))
               ELSE d.first
           END first,
           CASE
               WHEN D.post IS NULL
               THEN d.first
               ELSE d.post
           END post
    FROM
    (
        SELECT DISTINCT
               DATA,
               Split.a.value('/M[1]', 'NVARCHAR(MAX)') last,
               Split.a.value('/M[2]', 'NVARCHAR(MAX)') first,
               Split.a.value('/M[3]', 'NVARCHAR(MAX)') post
        FROM
        (
            SELECT DATA,
                   CAST('<M>'+REPLACE(DATA, ',', '</M><M>')+'</M>' AS XML) AS String
            FROM #TM
        ) A
        CROSS APPLY String.nodes('/M') Split(a)
    ) D
) N;

期望的结果：

desc                        last        first       post

ABC, RICK SEAN, MD          ABC         RICK SEAN   MD          
MES, AEL B, MD FACC         MES         AEL B       MD FACC
DAN, RK, MD                 DAN         RK          MD
OHI, NIK, MD F              OHI         NIK         MD F
KA E SYME, PA-C             KA          E SYME      PA-C
ALL MUD, SIM, MD            ALL MUD     SIM         MD
RINE EEMAN, FNP-C           RINE        EEMAN       FNP-C
ABC, PQR DIR                ABC         PQR         DIR

注意：上述结果按照提供的数据。

Answer 2

您可以尝试下面的查询

逻辑是当逗号小于3时，我们找到逗号的数量并为第一个出现的空格添加逗号当字符串中没有逗号时，这也适用。

create table staging_tbl_single_row (data varchar(max))
insert into staging_tbl_single_row values
('ABC, RICK SEAN, MD')
,('MES, AEL B, MD FACC')
,('DAN, RK, MD')
,('OHI, NIK, MD F')
,('KA E SYME, PA-C')
,('ALL MUD, SIM, MD')
,('RINE EEMAN, FNP-C'),
('ABC, PQR DIR');

; with cte as 
(
 select 
    row_number() over (order by (select NULL)) as column1,
    column2=
    case
        when 
             (len(data)-len(replace(data,',',''))=2) 
        then 
             data 
        when 
             (len(data)-len(replace(data,',',''))=1) 
        then 
             case --check if space is to the left of comma
                    when 
                        charindex(' ',left(data, charindex(',',data)))<>0
                    then 
                        stuff(data,charindex(' ',data),1,',')
                    else 
                        left(data, charindex(',',data))+
                        stuff(
                            substring(data,
                                      charindex(',',data)+1,
                                      len(data)
                                     ),
                            charindex(' ',
                                      substring(
                                          data,
                                          charindex(',',data)+1,
                                          len(data)
                                          ),
                                      2)
                            ,1,',')
                    end

       when
            (len(data)-len(replace(data,',',''))=0)
        then
              stuff(
       stuff(data,charindex(' ',data),1,',')
        ,charindex(' ',stuff(data,charindex(' ',data),1,','))
       ,1,',')

    end,data
    from 
    staging_tbl_single_row
)

select 
    last=[1],first=[2],post=[3]
from 
(
    select 
        t.column1,
        split_values=SUBSTRING( t.column2, t1.N, ISNULL(NULLIF(CHARINDEX(',',t.column2,t1.N),0)-t1.N,8000)),
        r= row_number() over( partition by column1 order by t1.N) 
    from cte t 
        join
        (
            select 
                t.column2,
                1 as N 
            from cte t  
                UNION ALL
            select 
                t.column2,
                t1.N + 1 as N
            from cte t 
                join
                (
                 select 
                    top 8000
                        row_number() over(order by (select NULL)) as N 
                 from 
                    sys.objects s1 
                        cross join 
                   sys.objects s2 
                ) t1 
            on SUBSTRING(t.column2,t1.N,1) = ','
         ) t1
          on t1.column2=t.column2
)a
pivot
( 
    max(split_values) for r in ([1],[2],[3])
   )p

的 see working demo

Answer 3

;WITH Split_Names (data, xmlname)
AS
(
    SELECT data,

    CONVERT(XML,'<Names><name>'  
    + REPLACE(data,',', '</name><name>') + '</name></Names>') AS xmlname
      FROM TTT
)

SELECT  CASE
           WHEN s.post IS NULL
           THEN LEFT(s.last, CHARINDEX(' ', s.last)-1)
           ELSE s.last
       END last,
       CASE
           WHEN s.post IS NULL
           THEN SUBSTRING(s.last, (CHARINDEX(' ', s.last)+1), LEN(s.last))
           ELSE s.first
       END first,
       CASE
           WHEN s.post IS NULL
           THEN s.first
           ELSE s.post
       END Post FROM
(
SELECT data,      
 xmlname.value('/Names[1]/name[1]','varchar(MAX)') AS Last,    
 xmlname.value('/Names[1]/name[2]','varchar(MAX)') AS First,
 xmlname.value('/Names[1]/name[3]','varchar(MAX)') AS Post
 FROM Split_Names
)s

SQL字符串由逗号和空格溢出

3 个答案: